Welcome to LinuxCNC.org

Hello Chris....
At the moment I'm using two different slaves but same manufacturer (Schneider Electric) the first one is named Zelio (it is a smart relay)
and the second one is named TWIDO (it is a small class full feature PLC very flexible and scalable).
The Modbus TCP/IP seems to work fine and in this way it very easy to add a lot of Analog and Digital I/Os to be used by ClassicLadder PLC task (and connected woth EMC2).
For the Wiki use I need to know how to implement the information into, so please can you help me ?
About the Modbus Slave functinality I will test this soon and I will give to you the feedback.
As a Modbus Slave ClassicLadder will only be passive into a Modbus network (because Modbus is not a multimaster network class).
This means an external master manage the Read and Write functionalities.

bigalex

look here for steps to add to wiki:

wiki.linuxcnc.org/cgi-bin/emcinfo.pl?BasicSteps

Yes to test classicladder as a slave you must have two compoters running classicladder (one as master) or have some other master.
I hope you can figure this out.

is this similar to your plc?:

cgi.ebay.com/TELEMECANIQUE-TWIDO-STARTER...?hash=item4cee833b72

Yes it is Chris.
The plc that you show is the modular one (there is also a compact version that is what I'm using) and you can find out more information about it on internet at the official website
of Schneider Electric for TWIDO TAKE A LOOK. By default the built in communication port can be used also as a Modbus over serial line . TWIDO can have a second communication port (very cheap) and attacched to this is possible to use a gateway Ethernet-->serial line (named Twidoport) and communicate with Modbus TCP/IP.
The code for the gateway is 499TWD01100.
Anyway for the application of EMC2 and CL+Modbus TCP/IP I think that every hardware device that is Modbus TCP/IP compliance can be used.


bigalex

Did you get a chance to add to the wiki?

Hello Chris....
At the moment I'm very busy so I need to wait a couple of weeks , because I want to test also the Modbus TCP/IP slave mode.
I've already the material and the software tools to test it ...... but the time.
So please be patient and I will do the job.
I check every day the messages on the forum to be up to date about the arguments that the users discuss.

bigalex

Sorry for my English.

I have siemens material (S7-200, S7-1200, S7-300) and Schneider can do some tests.